def new(cls, io):
IO_SIZE = 1000
BUFFER_SIZE = 10000
INDEX_COUNT = 50
OUTPOINTS_SIZE = 1000
fileheader = FileHeader()
io.write(FileHeaderSerializer.serialize(fileheader))
#write chunks
chunkfile = ChunkFile(io)
chunkfile.append_chunk( LOG_INDEX_NAME, INDEX_COUNT * LogIndexEntrySerializer.SERIALIZED_LENGTH)
chunkfile.append_chunk( LOG_BUFFER_NAME, BUFFER_SIZE )
chunkfile.append_chunk( OUTPOINTS_NAME, OUTPOINTS_SIZE )
#Load log index and log buffer
_, _logindexheader, logindexio = chunkfile.open_chunk(LOG_INDEX_NAME)
logindex_reader = LogIndexReader(logindexio, INDEX_COUNT)
logindex = SerializedLogIndex.new(logindex_reader)
_, logbufferheader, logbufferio = chunkfile.open_chunk(LOG_BUFFER_NAME)
buffer_reader = LogBufferReader(logbufferio, logbufferheader.length)
logbuffer = LogBuffer(buffer_reader)
# format other chunks ( not transactionally)
_, outpointsheader, outpointsio = chunkfile.open_chunk(OUTPOINTS_NAME)
outpoint_dict = SerializedDict.new(outpointsio, outpointsheader.length, serializer=OutpointIndexSerializer)
SerializedItemSet.load(outpoint_dict)
#
txlog = TransactionLog(chunkfile, logindex, logbuffer)
outpointchunk, outpointchunkheader = chunkfile.get_chunk(OUTPOINTS_NAME)
outpoint_io = TransactionalIO(txlog, outpointchunk)
outpoint_reader = SerializedDict.load(outpoint_io, OUTPOINTS_SIZE, OutpointIndexSerializer)
outpoints = SerializedItemSet.load(outpoint_reader)
return cls(txlog, outpoints)
def load(cls, io, iosize):
# read fileheader
fileheader = FileHeaderSerializer.deserialize(io.read(length=FileHeaderSerializer.SERIALIZED_LENGTH))
txchunk_file = TransactionalChunkFile.load(io, iosize)
outpoint_io = TransactionalIO.from_chunkname(txchunk_file, OUTPOINTS_NAME)
outpoint_dict = SerializedDict.load(outpoint_io, outpoint_io.size, serializer=OutpointIndexSerializer)
return cls(fileheader, txchunk_file, outpoint_dict)
def load(cls, io, iosize):
# read fileheader
fileheader = FileHeaderSerializer.deserialize(
io.read(length=FileHeaderSerializer.SERIALIZED_LENGTH))
txchunk_file = TransactionalChunkFile.load(io, iosize)
outpoint_io = TransactionalIO.from_chunkname(txchunk_file,
OUTPOINTS_NAME)
outpoint_dict = SerializedDict.load(outpoint_io,
outpoint_io.size,
serializer=OutpointIndexSerializer)
return cls(fileheader, txchunk_file, outpoint_dict)
def new(cls, io, fileheader=FileHeader(), INDEX_COUNT=50, BUFFER_SIZE=10000, OUTPOINTS_SIZE=1000):
fileheader = io.write(data=FileHeaderSerializer.serialize(fileheader))
txchunk_file = TransactionalChunkFile.new(io, INDEX_COUNT=INDEX_COUNT, BUFFER_SIZE=BUFFER_SIZE)
chunkfile = txchunk_file.chunkfile
# Appending/format other chunks (Not done transactionally)
chunkfile.append_chunk( OUTPOINTS_NAME, OUTPOINTS_SIZE )
outpointsio = ChunkIO.from_name(chunkfile, OUTPOINTS_NAME)
outpoint_dict = SerializedDict.new(outpointsio, outpointsio.size, serializer=OutpointIndexSerializer)
# re-open them transactionally
outpoint_io = TransactionalIO.from_chunkname(txchunk_file, OUTPOINTS_NAME)
outpoint_dict = SerializedDict.load(outpoint_io, OUTPOINTS_SIZE, OutpointIndexSerializer)
return cls(fileheader, txchunk_file, outpoint_dict)
def new(cls, io):
IO_SIZE = 1000
BUFFER_SIZE = 10000
INDEX_COUNT = 50
OUTPOINTS_SIZE = 1000
fileheader = FileHeader()
io.write(FileHeaderSerializer.serialize(fileheader))
#write chunks
chunkfile = ChunkFile(io)
chunkfile.append_chunk(
LOG_INDEX_NAME,
INDEX_COUNT * LogIndexEntrySerializer.SERIALIZED_LENGTH)
chunkfile.append_chunk(LOG_BUFFER_NAME, BUFFER_SIZE)
chunkfile.append_chunk(OUTPOINTS_NAME, OUTPOINTS_SIZE)
#Load log index and log buffer
_, _logindexheader, logindexio = chunkfile.open_chunk(LOG_INDEX_NAME)
logindex_reader = LogIndexReader(logindexio, INDEX_COUNT)
logindex = SerializedLogIndex.new(logindex_reader)
_, logbufferheader, logbufferio = chunkfile.open_chunk(LOG_BUFFER_NAME)
buffer_reader = LogBufferReader(logbufferio, logbufferheader.length)
logbuffer = LogBuffer(buffer_reader)
# format other chunks ( not transactionally)
_, outpointsheader, outpointsio = chunkfile.open_chunk(OUTPOINTS_NAME)
outpoint_dict = SerializedDict.new(outpointsio,
outpointsheader.length,
serializer=OutpointIndexSerializer)
SerializedItemSet.load(outpoint_dict)
#
txlog = TransactionLog(chunkfile, logindex, logbuffer)
outpointchunk, outpointchunkheader = chunkfile.get_chunk(
OUTPOINTS_NAME)
outpoint_io = TransactionalIO(txlog, outpointchunk)
outpoint_reader = SerializedDict.load(outpoint_io, OUTPOINTS_SIZE,
OutpointIndexSerializer)
outpoints = SerializedItemSet.load(outpoint_reader)
return cls(txlog, outpoints)
def new(cls,
io,
fileheader=FileHeader(),
INDEX_COUNT=50,
BUFFER_SIZE=10000,
OUTPOINTS_SIZE=1000):
fileheader = io.write(data=FileHeaderSerializer.serialize(fileheader))
txchunk_file = TransactionalChunkFile.new(io,
INDEX_COUNT=INDEX_COUNT,
BUFFER_SIZE=BUFFER_SIZE)
chunkfile = txchunk_file.chunkfile
# Appending/format other chunks (Not done transactionally)
chunkfile.append_chunk(OUTPOINTS_NAME, OUTPOINTS_SIZE)
outpointsio = ChunkIO.from_name(chunkfile, OUTPOINTS_NAME)
outpoint_dict = SerializedDict.new(outpointsio,
outpointsio.size,
serializer=OutpointIndexSerializer)
# re-open them transactionally
outpoint_io = TransactionalIO.from_chunkname(txchunk_file,
OUTPOINTS_NAME)
outpoint_dict = SerializedDict.load(outpoint_io, OUTPOINTS_SIZE,
OutpointIndexSerializer)
return cls(fileheader, txchunk_file, outpoint_dict)